1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Vlad1618 [11]
3 years ago
9

Which element has the same number of energy levels as aluminum (Al) and the same number of valence electrons as calcium (Ca)

Chemistry
2 answers:
GREYUIT [131]3 years ago
8 0

Answer:

magnesium (Mg)

Explanation:

ValentinkaMS [17]3 years ago
4 0

Answer:

Be (Beryllium)

Explanation:

You might be interested in
Which physical property of matter do these four objects have in common?
aleksandrvk [35]

Answer:

A- Non-magnetic

Explanation:

Brass, rubber, plastic, and glass will not be attracted by a magnet.

4 0
3 years ago
A chemical reaction can theoretically produce 137.5 grams of product, but in actuality 112.9 grams are
Butoxors [25]
<h3>Answer:</h3>

82.11%

<h3>Explanation:</h3>

We are given;

  • Theoretical mass of the product is 137.5 g
  • Actual mass of the product is 112.9 g

We are supposed to calculate the percentage yield

  • We need to know how percentage yield is calculated;
  • To calculate the percentage yield we get the ratio of the actual mass to theoretical mass and express it as a percentage.

Thus;

% yield = (Actual mass ÷ Experimental mass) × 100%

            = (112.9 g ÷ 137.5 g) × 100%

            = 82.11%

Therefore, the percentage yield of the product is 82.11 %

7 0
3 years ago
Dolphins use a method called echolocation to detect things such as obstacles and prey in the water. If a dolphin swimming in sea
JulsSmile [24]

Answer:

Dolphins use a method called echolocation to detect things such as obstacles and prey in the water. If a dolphin swimming in seawater at 25°C sends a 220-dB click with a frequency of 120.0 Hz, and then detects the reflection of the click exactly one-twentieth of a second later, approximately how far away is the object?

8 0
3 years ago
Definition of phosphoric acid
miss Akunina [59]
<em>Phosphoric acid is an acid used in fertilizers and soaps.</em>

<em>                                      Hope this helps:)</em>
8 0
3 years ago
What is the formula for carbon?
olasank [31]

The structural formula of carbon is as shown below. Carbon is a nonmetallic and tetravalent compound that can accommodate 4 electrons to form a covalent bond. It has the capacity to establish bonds easily with other atoms and with other carbon atoms too, carbon is competent of establishing multiple stable covalent bonds with suitable multivalent atoms.

Chemical formula = C

6 0
2 years ago
Other questions:
  • Calculate the formula/molecular mass of following
    15·1 answer
  • During the Big Bang, what were the two main chemical elements created?
    6·2 answers
  • A solution of phosphoric acid was made by dissolving 10.0 g of H3PO4 in 100.0 mL of water. The resulting volume was 113 mL. Calc
    6·1 answer
  • In animals, nitrogenous wastes are produced mostly from the catabolism of _____. In animals, nitrogenous wastes are produced mos
    11·1 answer
  • What is the vapor pressure (in mm Hg) of a solution of 17.5 g of glucose (C6H12O6) in 82.0 g of methanol (CH3OH) at 27∘C? The va
    15·1 answer
  • Does solubility have any unit? Answer properly​
    8·2 answers
  • If the reactants of a reaction have one s and four of atoms what will the products have
    9·1 answer
  • The mineral content of rocks helps to
    13·1 answer
  • 5. A football field is about 100 meters long. If it takes a person 20 seconds to run its length, how fast (what speed) were they
    11·1 answer
  • What mass of ag2co3 could you produce from 12.7 g agno3 assuming that it is the limiting reagent?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!